Hierarchical clustering analysis of 319 unique genes based on their gene expression patterns in PUSABGD72 in comparison to ICCV2. The 319 differentially expressed chickpea genes were distributed into 11 clusters based on their expression profiles. (A), the SOTA clustering tree. (B), expression profiles of SOTA clusters. The expression profile of each individual gene in the cluster is denoted by grey line and the mean expression profile is depicted by pink line. The number of genes in each cluster is given in the left upper corner and the cluster number is given in the right lower corner. (C), functional characterization of genes in each cluster. Detail information of genes within each cluster is elaborated in Additional File 2 and 3.